Loose-leaf binder.



I'. H. CRUMP.

LOOSE LEAF BINDER.

APPLIUATIOI FILED Jun 1s, 190s.

905,663. Patented Dec.1,1903.

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ATTORNEYS- rHs Napzms PETERS ca., WASHINGTON, D, c,

FRANK H. GRUMP, OF LOS ANGELES, CALIFORNIA.

LOOSE-LE AF BINDER.

Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed June 16, 1908. SealNo. 438,755.

To all whom 'it may concern.'

Be it known that I, FRANK H. CRUMP, a citizen of the United States, anda resident of Los Angeles, in the county of Los Angeles and State oiCalifornia, have made certain new and useful Improvements in Loose-LeafBinders, of which the following is a specification. i

My invention is an improvement in loose leaf binders and consists incertain novel constructions and combinations of parts hereinafterdescribed and claimed.

The object of the invention is to provide means for binding loose leaveshaving perforations in their edges, instead ofthe usual slottedopenings, and for holding the binders in proper spaced relation inrespect to each other and for permitting the removal of either of thebinders without disturbing the other, the leaves being inserted bymoving longitudinally on the posts instead of perpendicularly thereto.

' Referring to the drawings forming a part hereof-Figure 1 is aperspective view of the improvement, Fig. 2 is a plan view of the upperlamina of a binding plate, Fig. 3 Ais a similar view of one of the innerlaminae, Fig. 4 is a similar view of the spacing blocks, Fig. 5 is asimilar view of the locking slide, Fig. 6 is a similar view of the otherinner lamina, and Fig. 7 is a similar view of the bottom lamina, Fig. 8is a section through the binder posts and the end of the binding plates,Fig. 9 is a sectional view of a portion of the post and the extensionmember, Fig. 10 is a section on the line 10-10 of Fig. 8, and Fig. 11 isa plan view of the key. p

The present embodiment of the invention comprises a top binding plate A,and a bottom binding plate A the plates bein similar in construction andconnected wit backs B, B between which and the binding plates arereceived the loose leaves B2. Each of the binding plates consists of anouter and an inner lamina a provided near each end with a circularopening a. and inner laminae ai* having a central rectangular out awayportion a which portion is connected with one of the 4ends of the laminaby a slot ai", the slot having lateral extensions a at approximately itscenter. The inner laminae are spaced apart by blocks a7, as, a9, theblock a7 being rectangular in form and extending from the end of the cutaway ortion to the end of the lamina, and the b ocks a7, as are alsorectangular in form and are arranged between the inner laminae on eachside of the out away portion. l

The blocks a are arranged on each side of the slot a5, and are providedwith lateral recesses al corresponding to the recesses a, The laminasand the plates are provided with registering openings, through whichextend rivets or screws for securing the laminee together. Y

The slide locking bar (1,12v is adapted to move within the cut awayportion of the laminas a3, and is provided near each end with ellipticalopenings 0,13 which register with the openings a of the outer lamina andone end of the bar is provided with a threaded longitudinal opening al,in which is threaded a in a, provided with a rigid collar a,16 an asquare head 0,17.

4 The laminae and the blocks and the slide bars are assembled in theorder shown in Figs. 2 to 7 inclusive, the slide bar moving in the cutout portions a of the inner laminae and being limited in its movementsby the ends and sides of the cut away portion and the blocks a7, 0.8,0.9. The collar al is arranged in the recesses a and a, thus preventinglongitudinal movement of the pin @15 with respect to the binder plates.

The extension posts comprise an inner eX- ternally threaded member' cand an outer internally threaded member c each of the sections ormembers being provided with a head c2 kerfed as at c3 to ermitengagement by the driving blade d oipthe tool D to be presentlydescribed. The member or section c, is provided with a flange c, havingintegral therewith a jacket or sleeve c5 which s ips over the outermember c as indicated 1n he tool D before mentioned, consists of thedriving blade d referred to and a portion d1 provided with a squaresocket d2 for engaging the square head a" of the pin, and the tool isalso provided with a curved arm d3 having a point d4 which is adapted toengage one of a series of openings e of an eX- tension E for theextension post, the said eX- tension comprising a hollow internallythreaded portion e of the same diameter as the portion c, and a solidexternally threaded reduced portion e2 adapted to engage in the ortion cas shown in Fi 9 The portion c 1s adapted to engage in t e portion e ofthe extension.

In operation to insert or remove leaves from the binder, the pin L15 ofeither the top or bottom binder plate is turned by thekey, it beinunderstood that the two binders are precise y the same, which moves theedges of the elliptical openings of the locking bar out of engagementwith the heads of the eX,- tension posts, thus permitting the binder tobe slipped off the posts, which meanwhile are held by the other binder.The leaves may then be slipped on or off the posts after which thebinder'which has been removed is replaced, and the locking bar moved theother way until the ends of the elliptical openings engage the saidvposts.

I claim:

1. A loose leaf binder, comprising a pairy one screwing into the other,the innermost section being provided with a sleeve moving over theoutermost section for the purpose set forth.

2. A loose leaf binder comprising binding plates, each having alongitudinal central recess, and transverse openings near the ends ofthe recess, a locking bar slidable in they longitudinal recess andprovided with elliptical openings registering with the transverseopenings, a pin threaded into the end of the locking bar and engagingoutside of the plate, means for preventing longitudinal movement of thepin with respect to the plate, said pin having a square head for thepurpose set forth and extension posts connecting the plates and engagingthe transverse openings.

3. In a loose leaf binder, extension posts comprising inner and outersections, the outer section being internally screw threaded and theinner section being externally screwthreaded and provided with a sleeveextending over the outer section when screwed into it and an extensionmember provided with a reduced externally screw threaded portion forengaging the outer member and an internally screw threaded portion forengaging the inner member.

FRANK H. CRUMP.

Witnesses:

JACK BUCKLIN, J. T. HAYES.

